The Notification API allows you to notify users of significant events as well as control how those events escalate and eventually close. In the WinGate Management Console, a notification appears as in the image below.

Notification Plans

Notification plans describes how a notification is processed. The Notification API allows you to report notifications, acknowledge  and close them. See NotificationReport, NotificationAcknowledge and NotificationClose

Notification Enumeration

The Notification API provides a way to enumerate the notification plans in the system. You can use this to allow the user to select notification plans for the handling the notifications you want to issue. See NotifyEnumeratePlans, NotifyPlanName and NotifyPlanDescription